Leather-skiving machine



(No Model.) v Q 2 Sheets-Sheet 1.

O. AMAZEEN.

LEATHER SKIVING MACHINE. No. 273,931. Patented Mar. 13.1883.

WITNEESEE INVENTUR 0PM f7? Z.

N. PETERS. Photo-Litho rapher, Wasmn ion. n c.

(No Model.) 2 Sheets-Sheet 2.

0. AMAZEEN.

LEATHER SKIVING MACHINE.

No. 278,931. Patented Mar. 13,1883.

WITNEEEEE 2 INVENTUR UNITED STATES PATENT ()FFICE.

LEATHER-SKIVING MACHINE.

SPECIFICATION forming part of Letters A pplication filed April .22,1882.

Patent No. 273,931, dated March 13, 1883.

(No model.)

To all whom it may concern Be it known that l, CHRISTOPHER AMA- ZEEN, ofBoston, in the county of Suffolk and State of .l'lassachusetts, acitizen of the United States, have invented a new and useful Improvementin Leather-Skiving Machines, of which the following is a full, clear,and exact description, reference being had to the accompanying drawings,forming apart of this specification, in explaining its nature, in which-Figure l is aside elevation of the machine. Fig. 2 is an elevation andsection upon the dotted line a: of Fig. 1. Fig. 3 is a horizontalsection and 'plan upon and below the dotted line y y of Fig. 1. Fig. 4is a plan "iew, representlng one position of the revolving cutter inrelation to the feeding devices. Fig. 5represents the position of thesame parts alter the revolving cutter has been adjusted to compensatefor wear. Fig. 6 is a view of the same parts in elevation, representingthe revolving cutter at a considerable inclination in relation to thefeed-roll, and Fig. 7 represents the same parts after the cutter hasbeen ad- 2 justed to a less inclination in relation to the feed-roll,these views (Figs. 4., 5, 6, and 7) representing the advantages of theadjustments hereinafter described.

This invention is an improvement upon that described in my LettersPatent No. 200,682, dated February 26, 1878, and No. 220,906, datedOctober 28, 1879; and it consists in providing the revolving cutter withthree adjustments: first, avertical adjustment in relation to the feedroll or drum; second, an adjustment for varying the inclination of thecuttingdisk in relation to the feed roll or drum; and, third, anadjustment whereby the cutting-disk as it wears may be movedhorizontally toward the feed roll or drum, so that its cutting-edge mayalways be upon a line substantially parallel with the axis of said rollor drum.

in the drawings, A is the feed roll ordrum; B, the feed-disk; C, therevolving cutter. These parts are similar in construction to like partsdescribed in said Patent No. 220,906, and are operated in the samemanner. Therefore the specific means of operation need not be describedhere.

E is the guide, and N the presser, and they are like similar partsdescribed in said patent.

I will first describe the manner of providing for the verticaladjustment of the revolving cutter.

The shaft 0 of the cutter has a grooved or recessed collar, 0, which iskeyed to the shaft to revolve with it. Into this recess or groove thefork or yoke c enters. This fork or yoke is secured to the end of thelink or arm 0 which has suitable bearings,c, and which is movedvertically by means of the lever 0 pivoted at 0", and the adjustingthumb-screw c" and spring 0 keep the end of the lever in contact withthe end of the thumb-screw. The arm or link 0 preferably is slotted, andthe yoke is fastened thereto by means of a screw, 0 so that it may beeasily adjusted upon said arm or link. As the recessed sleeve or groovedcollar is fastened to the shaft, the movement of the yoke verticallywill cause the shaft to be moved vertically, and therefore thecuttingdisk, and this movement is effected by means of the set-screw,and of course can be varied at will. The second adjustment, or thatwhich relates to the varying of the inclination of the cutting-disk inrelation to the feed roll or drum, is provided by means of the block F,

which carries the bearings ffor the cuttershaft 0. This block isfastened to the frame F of the machine by means of the screws or bolts ff and the bolt f passes through a slot,f in the block or plate. Byloosening the two bolts or screws f f the block or plate may be moved upor down upon thecenter f to adjust the inclination of the cuttingdisk,and the right inclination being obtained the screws or bolts aretightened. The third adjustment, or that-which is provided for thepurpose of compensating for the wear of the revolving cutter, isaccomplished by making the block F in two parts, h h, and hinging thepart It to the part h, so that the part k may be swung horizontally inrelation to the frame of the machine. As above described, the part hisfastened to the frame of the machine by the screw or bolt f. It has, inaddition, a setscrew, f and in order to vary the position of thecutting-edge of the disk in relation to the feed-roll A as the revolvingcutter wears, the screw or boltf is loosened and the set-screw istightened sufficiently to vary the position of the part It in relationto the frame of the machine, the loosening of the screw f allowing it tobe swung away therefrom, and the tightening of the set-screw looking itfirmly in its new position. The. advantages of the adjustment to therange and wear of the machineare obvious, and need no furtherexplanation.

It will be observed that the first-named adjustment provides meanswhereby Work of any thickness may be skived; that the second adjustmentprovides means whereby the width of the skived portion may be varied,and that the third adjustment provides means for setting the knife inthe proper position in relation to the feeding mechanism, so that it maybe used as long as the blade remains thin enough for the purpose.

-I am aware that Patents No. 208,955, granted M. M. Glough, datedOctober 15, 1878, and No. 228,183, granted W. S. Fitzgerald, dated June1, 1880, describe machines for skiving leather; but I do notclaim any ofthe devices therein described, as they do not embrace thespirit of myinvention.

Having thus fully described my invention, I claim and desire to secureby Letters Patent of the United States-- 1. The combination of therevolving cutter O, the lever 0 connected with the cutter-shaft,substantially as described, and the adjustingscrew 0', all substantiallyas and for the purposes set forth.

2. The combination of the revolving cutter 0, its hingedsupporting-block h, and means for moving the block laterally in relationto the frame F, and for looking it stationary in any desired position inrelation thereto,whereby the cutter as it isworn may he movedhorizontally in relation to the feeding devices, all substantially asand forthe purposes described.

3. The combination of a revolving cutter, 0, its supporting-blockadapted to be moved upon the center f in adjusting the inclination ofthe cutter, and means for locking the block stationary in any desiredposition, all substantially as and for the purposes described.

4:. The combination of the revolving cutter 0, its hinged support h h,substantially as described, for providing the adjustment of said supportwith a movement upon the center f and the portion h with a lateralmovement, and means for locking them in any desired position, wherebythe cutter C may be both varied in inclination and moved horizontally,all substantially as and for the purposes described.

(J HRISTOPHER AMAZE EN.

Witnesses:

F. F. RAYMOND, 2d, WILLARD C. Foes.

